Strategy for management to deal with the union in relation to the expansion proposal

For a unionized company, where the union is the legal representative of the employees in the bargaining unit. 1-Set a strategy for management to deal with the union in relation to the expansion proposal. 2- Can you involve the union without giving up your management right to run the company? 3- Your strategy should include best and worst case scenarios on the union’s reaction to your approach and your proposal on how to manage potential reactions.